Hard case or soft case for ipod touch

which one should i buy with the ipod touch a soft case or hard case:http://cgi.ebay.com/NEW-Crystal-Clear-Hard-Case-for-iPod-Touch-iTouch-Smoke_W0QQitemZ220266907829QQihZ012QQcategoryZ56171QQssPageNameZWDVWQQrdZ1QQcmdZViewItem or http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem%26amp;ssPageName=STRK:MEWNX:IT%26amp;item=160269145310Hard case or soft case for ipod touch
I would say a soft case, since it absorbs impact better.